EP1589609A2 - Antenne d'écouteur et appareil radio portable équipé de cette antenne - Google Patents

Antenne d'écouteur et appareil radio portable équipé de cette antenne Download PDF

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Publication number
EP1589609A2
EP1589609A2 EP05008422A EP05008422A EP1589609A2 EP 1589609 A2 EP1589609 A2 EP 1589609A2 EP 05008422 A EP05008422 A EP 05008422A EP 05008422 A EP05008422 A EP 05008422A EP 1589609 A2 EP1589609 A2 EP 1589609A2
Authority
EP
European Patent Office
Prior art keywords
cable
earphone
signal
shield
audio signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05008422A
Other languages
German (de)
English (en)
Other versions
EP1589609A3 (fr
EP1589609B1 (fr
Inventor
Yoshitaka Yoshino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Sony Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of EP1589609A2 publication Critical patent/EP1589609A2/fr
Publication of EP1589609A3 publication Critical patent/EP1589609A3/fr
Application granted granted Critical
Publication of EP1589609B1 publication Critical patent/EP1589609B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
    • H01Q1/46—Electric supply lines or communication lines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/22—Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes
    • H02K5/225—Terminal boxes or connection arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
    • H01Q5/22—RF wavebands combined with non-RF wavebands, e.g. infrared or optical
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1033—Cables or cables storage, e.g. cable reels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/02—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone
    • H04M19/04—Current supply arrangements for telephone systems providing ringing current or supervisory tones, e.g. dialling tone or busy tone the ringing-current being generated at the substations
    • H04M19/047—Vibrating means for incoming calls

Definitions

  • the present invention contains subject mater related to Japanese Patent Application Nos. JP2004-123465 and JP2005-030906 respectively filed in the Japanese Patent Office on April 19th, 2004, and on February 7th, 2005, the entire contents of those being incorporated herein by reference.
  • the present invention relates to an earphone antenna for portable radio equipment, which is put on a human body at use, and portable radio equipment provided with this earphone antenna.
  • Patent Document 1 JP-A Laid-Open No. 2003-163529
  • the earphone antenna which utilizes the signal wire for transmitting audio signal to earphones as an antenna had a problem that because the earphone and/or the signal wire make direct contact with the human body, the human body caused a significant influence on the radio equipment via the antenna to deteriorate stability of reception greatly.
  • VHF bands from 90 to 108 MHz (1-3 channels), from 170 to 222 MHz (4-12 channels), and UHF band from 470 to 770 MHz (13-62 channels) are used, therefore, a liquid crystal television receiver for receiving television broadcasts is required to receive high frequency signals in an extremely wide band range from 90 to 770 MHz, thereby with a conventional rod antenna or earphone antenna the performance of which is inferior to a fixed-type antenna, there was a problem that it was extremely difficult to secure a sufficient sensitivity in the frequency band range required above.
  • the rod antenna and the earphone antenna is a monopole antenna which resonates at ⁇ /4, its reception sensitivity is greatly affected depending on a ground size of a portable radio terminal, thereby limiting the design of the portable radio equipment.
  • the present invention is contemplated to solve the aforementioned shortcomings associated with the conventional art, and thereof it is desirable to provide an earphone antenna which is capable of reducing the adverse effect by the human body, and achieving a high gain in a wide band range, and also provide portable radio equipment which secures reception stability.
  • An earphone antenna includes: an earphone cable including a pair of first signal lines which are insulation- coated for supplying audio signal to earphone; a shield cable including a coaxial cable having a central conductor passing high frequency signal, being coated with an insulator and further covered with a first shield wire, and a second signal line for audio signal and a grounding wire which are insulation-coated, the external thereof being covered with a second shield wire via an insulation material, wherein one end of said shield cable is connected to a main body of radio equipment via a multipin connector; and a connection block which connects the other end of said shield cable to the earphone cable, wherein in the connection block, an audio signal transmission path is formed by connecting the second signal line for audio signal and the grounding wire respectively to the pair of first signal lines of the earphone cable via a high frequency choke which becomes low impedance in a frequency range of audio signal and high impedance in a frequency range of high frequency signal, and connecting the central conductor of the coaxial cable and
  • portable radio equipment includes: a main body of radio equipment provided with a multipin jack which is connected to a tuner and an audio signal output unit; and an earphone antenna which comprises an earphone cable including a pair of first signal lines which are insulation- coated for supplying audio signal to earphone; a shield cable including a coaxial cable having a central conductor passing high frequency signal, being coated with an insulator and further covered with a first shield wire, and a second signal line for audio signal and a grounding wire which are insulation-coated, the external thereof being covered with a second shield wire via an insulation material, one end of the shield cable being connected to a main body of radio equipment via a multipin connector; and a connection block which connects the other end of the shield cable to the earphone cable, wherein the earphone antenna is formed such that, in the connection block, an audio signal transmission path is formed by connecting the second signal line for audio signal and the grounding wire respectively to the pair of first signal lines of the earphone cable via
  • the transmission path for audio signals is formed, also by connecting the central conductor of the coaxial cable and the first shield wire thereof to the unbalanced part of the balun which carries out impedance and balanced/unbalanced mode transform, and by connecting the pair of first signal lines of the earphone cable to one end of the balanced part of the balun via the capacitor which becomes, respectively, high impedance in the frequency range of audio signal and low impedance in the frequency range of high frequency signal, and further by connecting the other end of the balanced part of the balun to the second shield wire which covers the external of the coaxial cable and the second signal line, the earphone cable and the second shield wire which covers the external of the coaxial cable and the second signal line are caused
  • An earphone antenna according to an embodiment of the present invention is provided with, for example, stereophonic earphones which are connected to the aforementioned connection block via two earphone cables, and a high frequency choke inserted in an en-route portion of one or both of the earphone cables so as to differ a resonance frequency between the earphone cables or make it variable.
  • the earphone antenna may be configured to have a microphone and a switch for switching mounted on the aforementioned connection block.
  • the earphone antenna may be configured to have an amplifier mounted in the aforementioned connection block.
  • the connection block by connecting the second signal line for audio signal and the grounding wire to the pair of first signal lines of the earphone cable via the high frequency choke which becomes, respectively, low impedance in the frequency range of audio signal and high impedance in the frequency range of high frequency signal, the transmission path for the audio signal is formed, also by connecting the central conductor of the coaxial cable and the first shield wire thereof to the unbalanced part of the balun which carries out the impedance and balanced/unbalanced mode transform, and by connecting the pair of first signal lines of the earphone cable to the one end of the balanced part of the balun via the capacitor which becomes high impedance in the frequency range of audio signal and low impedance in the frequency range of high frequency signal, and further by connecting the other end of the balanced part of the balun to the second shield wire which covers the external of the coaxial cable and the second signal line, the earphone antenna which functions as the dipole antenna, together with the earphone cable and the second wire which
  • the present invention is applicable to, for example, a LCD television receiver 100 shown in FIG. 1.
  • an earphone antenna 10 is connected to a main body of the receiver 120 via a pin jack connector 110.
  • the pin jack connector 110 is composed of a five electrode pin 110A and a jack 110B, to which five kinds of lines of antenna (Ant), headphone detection (detect), audio L channel (L), audio R channel (R), and ground (Gnd) are connected, respectively.
  • a tuner unit 121 In a main body of the receiver 120, as shown in FIG. 3, there are provided a tuner unit 121, an IF signal processing unit 122 connected to the tuner 121, a video signal processing unit 123 and an audio signal processing unit 125 both connected to the IF signal processing unit 122, a liquid crystal display unit 124 connected to the video signal processing unit 123, and a jack 110B which constitutes the pin jack connector 110 described above.
  • the jack 110B described above has five movable terminals 1, 2, 5, 6, 7 and two fixed terminals 3, 4 as shown in FIG. 2, where, as shown in FIG. 3, the movable terminal 7 is connected as an antenna terminal (Ant) and the movable terminal 1 as ground to the tuner unit 121, further, movable terminals 2, 5 are connected to the audio signal processing unit 125 as an audio L channel terminal (L) and an audio R channel terminal (R).
  • the movable terminal 6 is connected to GND of a substrate in the main body of the radio equipment as a common ground terminal (Gnd) of the radio equipment.
  • the fixed terminal 3, 4 is a terminal for firmly securing the pins.
  • the earphone antenna 10 is composed of a shield cable 20, one end of which is connected to the receiver's main body 120 via the five pin jack connector 110, a connection block 30 which is connected to the other end of the shield cable 20, and stereophonic earphones 40L, 40R which are connected to the connection block 30 via two earphone cables 41, 42.
  • the shield cable 20 is composed of:, as shown in FIG. 4, a coaxial cable 24 having a central conductor 21 which passes high frequency signal, coated with an insulator 22 further covered with a shield wire 23; signal lines 25L, 25R for audio signal which are insulation-coated; and a grounding wire 25C, wherein external thereof is covered with a shield wire 27 having a structure wound with soft copper via an insulation sheet 26 made of paper or vinyl sheet, alternatively having a braided structure.
  • this shield cable 20 there is provided a five electrode pin 110A which is connected to the central conductor 21 of the coaxial cable 24 and the shield wire 23 thereof, signal lines 25L, 24R for audio signal, and the grounding wire 25C. Further, at the other end of this shield cable 20, there is provided the connection block 30 which is connected to the central conductor 21, the shield wire 23 thereof, the signal lines 25R, 25R for audio signals, the grounding wire 25C and the shield wire 27.
  • shield wire 27 which covers the coaxial cable 24, audio signal lines 25L, 25R and the grounding wire 25C is connected to the aforementioned connection block 30, but is not connected to the aforementioned pin 110A.
  • connection block 30 has a substrate 34 on which there are formed a ground pattern 31 in the center thereof, transmission line patterns 32L, 32R for stereophonic audio signal which are mounted on both sides of the ground pattern 31, three connection lands 33L, 33R, 33C mounted on upper edge portions toward the ground pattern 31, a fourth and a fifth connection lands 33D, 33E mounted at one side toward the ground pattern 31 on the substrate.
  • an edge portion of the transmission line pattern 32L, 32R for the stereophonic audio signal is connected to a first and a second connection lands 33L, 33R among the three connection lands 33L, 33R, 33C via a high frequency choke 35L, 35R.
  • the ground pattern 31 is connected to the third connection land 33C among the three connection lands 33L, 33R, 33C via a high frequency choke 35C.
  • the first connection land 33L and the third connection land 33C are connected via a chip capacitor 36L.
  • the second connection land 33R and the third connection land 33C are connected via a chip capacitor 36R.
  • the third connection land 33C and the fourth connection land 33D are connected via a chip capacitor 36.
  • balun 37 for performing impedance and balanced/unbalanced mode transform is mounted, which is connected to the fourth connection land 33D, the ground pattern 31 and the fifth connection land 33E.
  • the balun 37 is configured such that one end of its balanced side is connected to the fourth connection land 33D, the other end of the balanced side is connected to the fifth connection land 33E, and one end of its unbalanced side is connected to the ground pattern 31.
  • a left side earphone cable 41 including two signal lines 41A, 41B for supplying left side audio signal to a left side earphone 40L is connected to the first connection land 33L and the third connection land 33C
  • a right side earphone cable 42 including two signal lines 42A, 42B for supplying right side audio signal to a right side earphone 40R is connected to the second connection land 33R and the third connection land 33C.
  • connection block 30 the aforementioned shield cable 20 is connected in such a manner as will be described in the following.
  • the left side audio signal line 25L and the right side signal line 25R of the shield cable 20 are connected to the transmission line pattern 32L and 32R for audio signal formed on the substrate 34,and further the grounding wire 25C thereof is connected to the ground pattern 31.
  • the central conductor 21 and the shield wire 23 which constitute the axial configuration of the shield cable 20 are mounted on the ground pattern 31, then the shield wire 23 thereof is connected to the ground pattern 31 and an end of the central conductor is connected to the other end of the unbalanced side of the balun 37.
  • the shield wire 27 is connected to the fifth connection land 33E.
  • ferrite beads for example, BLM18HD102SN1, size 1608 produced by Murata Manufacturing Ltd.
  • the high frequency choke 35L, 35R, 35C which uses this ferrite beads, becomes low impedance to audio signals in the frequency range below 20 kHz, and high impedance to high frequency signals, thereby blocking passage of the high frequency signal.
  • the chip capacitors 36L, 36R, 36C such ones having capacitance of 10 pF are used respectively, so as to become high impedance to audio signals in the frequency range below 20 kHz in order to block passage of the audio signal, and become low impedance to the high frequency signal.
  • This earphone antenna 10 leads out earphone cables 41, 42 each composed of two signal lines of the left side line 41A and GND 41B/the right side line 42A and GND, on each side, for transmitting audio signal to speakers 40L, 40R of a stereophonic earphone, then in order to separate the audio signal from the high frequency signal, high frequency wave chokes 35L, 35R, 35C using ferrite beads are provided at an input portion of audio signal and at a portion falling to the ground, i.e., at portions 33L, 33R, 33C of connection lands, which become high impedance (1 k ⁇ or greater) in the frequency band for use in television broadcasts, and low impedance in the audio frequency band (less than 20 kHz), thereby separating the audio signal and the high frequency signal.
  • the earphone cable 41, 42 each including two signal lines 41A, 41B/42A, 42B on each side, is connected, in terms of high frequency, to the central conductor 21 which is a signal line of the coaxial cable 23, therefore, in order to separate the audio range therefrom, it is configured to connect between the connection lands 33L, 33R, 33D, 33E via chip capacitors 36L, 36R, 36 of 10 pF, so as to separate signals in the audio range, and connect in RF signals (frequency range of television bands).
  • the frequency bands allocated for use to television broadcasts in Japan are, 90M to 108MHz (1-3 channels) and 170M to 222MHz (4-12 channels) in VHF, and 470M to 770MHz (13-62 channels) in UHF band.
  • the earphone cable 41, 42 and the shield wire 27 which covers the shield cable 20 are configured to be used as an aerial having a dipole antenna structure resonating at its line length, and each length thereof is adjusted to be able to receive 100 MHz in the VHF band.
  • a characteristic impedance of the coaxial cable 24 is set at 75 ⁇ , a length of the shield cable 20 at 70 cm, a length of the earphone cable 41, 42 at 50cm, and it is adjusted to resonate at 100 MHz.
  • 200 MHz it is configured to be able to receive as 1 ⁇ antenna.
  • UHF it is configured to use harmonics oscillations of 100 MHz and 200 MHz (triple, quintuple, septuple waves).
  • the earphone antenna 10 according to the embodiment of the invention because of its dipole structure, is stabilized as an antenna, and various functions can be added to the connection block 30.
  • NF noise factor
  • the lengths of the two earphone cables 41, 42 are set equal, however, it is also possible to vary respective lengths of the two earphone cables 41, 42 from the connection lands 33L, 33R, 33C in the connection block 30 to the earphones 40L, 40R, in order to be able to correspond to different frequencies.
  • a high frequency choke (ferrite beads) 35A, 35B into an en-route portion of one of the two earphone cables 41, 42, for example, of the earphone cable 41 for the left side audio signal, as indicated in an earphone antenna 10A shown in FIG. 9, it may be configured to separate high frequency signal to shorten its resonance length.
  • the earphone antenna 10A shown in FIG. 9 it is set such that a resonance length in one earphone antenna 41 is 250 mm while a resonance length in the other earphone antenna 42 is 400 mm, a characteristic impedance of the coaxial cable 21 is 75 ⁇ , and a length of the shield cable 20 is 600 mm.
  • the other components are the same as in the aforementioned earphone antenna 10, therefore, the same components are indicated by the same symbols and numeric in FIG. 9, omitting detailed description thereof.
  • the present invention is also applicable to a case of a monophonic earphone where a single earphone cable is used. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and alterations may occur depending on design requirements and other factors insofar as they are within the scope of the appended claims or the equivalents thereof.
EP05008422.7A 2004-04-19 2005-04-18 Antenne d'écouteur et appareil radio portable équipé de cette antenne Expired - Fee Related EP1589609B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2004123465 2004-04-19
JP2004123465 2004-04-19
JP2005030906 2005-02-07
JP2005030906A JP4026648B2 (ja) 2004-04-19 2005-02-07 イヤホンアンテナ及びこのイヤホンアンテナを備えた携帯型無線機

Publications (3)

Publication Number Publication Date
EP1589609A2 true EP1589609A2 (fr) 2005-10-26
EP1589609A3 EP1589609A3 (fr) 2005-11-30
EP1589609B1 EP1589609B1 (fr) 2015-12-23

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Family Applications (1)

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EP05008422.7A Expired - Fee Related EP1589609B1 (fr) 2004-04-19 2005-04-18 Antenne d'écouteur et appareil radio portable équipé de cette antenne

Country Status (5)

Country Link
US (1) US7340285B2 (fr)
EP (1) EP1589609B1 (fr)
JP (1) JP4026648B2 (fr)
KR (1) KR101050046B1 (fr)
TW (1) TWI263376B (fr)

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WO2008017844A2 (fr) * 2006-08-09 2008-02-14 The Technology Partnership Plc Casque d'écoute
WO2008040399A1 (fr) * 2006-10-06 2008-04-10 Sony Ericsson Mobile Communications Ab Antenne de télévision intégrée pour dispositif de communication portable
WO2008108261A1 (fr) 2007-03-07 2008-09-12 Sony Corporation Dispositif de relais
EP1971179A1 (fr) * 2005-12-19 2008-09-17 Ad-Plan CO., LTD Antenne équipée d un écouteur et écouteur
EP2076065A1 (fr) 2007-12-27 2009-07-01 Oticon A/S Dispositif auditif et procédé pour la réception sans fil et/ou l'envoi de données
CN102036028A (zh) * 2009-09-29 2011-04-27 日立视听媒介电子股份有限公司 接收装置及其天线切换电路和调谐器模块
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US9237405B2 (en) 2013-11-11 2016-01-12 Gn Resound A/S Hearing aid with an antenna
US9237404B2 (en) 2012-12-28 2016-01-12 Gn Resound A/S Dipole antenna for a hearing aid
US9293814B2 (en) 2010-10-12 2016-03-22 Gn Resound A/S Hearing aid with an antenna
US9369813B2 (en) 2012-07-06 2016-06-14 Gn Resound A/S BTE hearing aid having two driven antennas
US9402141B2 (en) 2012-07-06 2016-07-26 Gn Resound A/S BTE hearing aid with an antenna partition plane
US9408003B2 (en) 2013-11-11 2016-08-02 Gn Resound A/S Hearing aid with an antenna
US9446233B2 (en) 2007-05-31 2016-09-20 Gn Resound A/S Behind-the-ear (BTE) prosthetic device with antenna
US9554219B2 (en) 2012-07-06 2017-01-24 Gn Resound A/S BTE hearing aid having a balanced antenna
US9686621B2 (en) 2013-11-11 2017-06-20 Gn Hearing A/S Hearing aid with an antenna
US9729979B2 (en) 2010-10-12 2017-08-08 Gn Hearing A/S Antenna system for a hearing aid
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JP3933148B2 (ja) * 2004-06-04 2007-06-20 ソニー株式会社 イヤホンアンテナ及びこのイヤホンアンテナを備えた携帯型無線機
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KR101853123B1 (ko) * 2011-08-17 2018-04-30 삼성전자주식회사 이어폰 안테나 장치
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CN102036028B (zh) * 2009-09-29 2013-08-14 日立视听媒体股份有限公司 接收装置及其天线切换电路和调谐器模块
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US9293814B2 (en) 2010-10-12 2016-03-22 Gn Resound A/S Hearing aid with an antenna
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US9686621B2 (en) 2013-11-11 2017-06-20 Gn Hearing A/S Hearing aid with an antenna
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US7340285B2 (en) 2008-03-04
JP2005333613A (ja) 2005-12-02
EP1589609A3 (fr) 2005-11-30
TW200612607A (en) 2006-04-16
JP4026648B2 (ja) 2007-12-26
US20050245289A1 (en) 2005-11-03
EP1589609B1 (fr) 2015-12-23
TWI263376B (en) 2006-10-01
KR20060045806A (ko) 2006-05-17
KR101050046B1 (ko) 2011-07-19

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